libcxxabi/test/catch_const_pointer_nullptr.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: no-exceptions
  10
  11 #include <cassert>
  12
  13 // Clang emits  warnings about exceptions of type 'Child' being caught by
  14 // an earlier handler of type 'Base'. Congrats clang, you've just
  15 // diagnosed the behavior under test.
  16 #if defined(__clang__)
  17 #pragma clang diagnostic ignored "-Wexceptions"
  18 #endif
  19
  20 #if __has_feature(cxx_nullptr)
  21
  22 struct A {};
  23
  24 void test1()
  25 {
  26     try
  27     {
  28         throw nullptr;
  29         assert(false);
  30     }
  31     catch (A* p)
  32     {
  33         assert(!p);
  34     }
  35     catch (const A*)
  36     {
  37         assert(false);
  38     }
  39 }
  40
  41
  42 void test2()
  43 {
  44     try
  45     {
  46         throw nullptr;
  47         assert(false);
  48     }
  49     catch (const A* p)
  50     {
  51         assert(!p);
  52     }
  53     catch (A*)
  54     {
  55         assert(false);
  56     }
  57 }
  58
  59 void test3()
  60 {
  61     try
  62     {
  63         throw nullptr;
  64         assert(false);
  65     }
  66     catch (const A* const p)
  67     {
  68         assert(!p);
  69     }
  70     catch (A*)
  71     {
  72         assert(false);
  73     }
  74 }
  75
  76 void test4()
  77 {
  78     try
  79     {
  80         throw nullptr;
  81         assert(false);
  82     }
  83     catch (A* p)
  84     {
  85         assert(!p);
  86     }
  87     catch (const A* const)
  88     {
  89         assert(false);
  90     }
  91 }
  92
  93 void test5()
  94 {
  95     try
  96     {
  97         throw nullptr;
  98         assert(false);
  99     }
 100     catch (A const* p)
 101     {
 102         assert(!p);
 103     }
 104     catch (A*)
 105     {
 106         assert(false);
 107     }
 108 }
 109
 110 void test6()
 111 {
 112     try
 113     {
 114         throw nullptr;
 115         assert(false);
 116     }
 117     catch (A* p)
 118     {
 119         assert(!p);
 120     }
 121     catch (A const*)
 122     {
 123         assert(false);
 124     }
 125 }
 126
 127
 128 #else
 129
 130 void test1() {}
 131 void test2() {}
 132 void test3() {}
 133 void test4() {}
 134 void test5() {}
 135 void test6() {}
 136
 137 #endif
 138
 139 int main(int, char**) {
 140     test1();
 141     test2();
 142     test3();
 143     test4();
 144     test5();
 145     test6();
 146
 147     return 0;
 148 }